Typewriting machine



. A. E. HOWELL.

TYPEWRITING MACHINE.

APPLICATION FILED AUG-7,1919.

Patented May 16, 1922.

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anarnnnn. HownL on BRQQKLYN, NEW Yong, ASSIGNOB To; UNDERWOOD TYPE-wnrrnn COMPANY, or new-roan, N. Y,, aconronar on on DELAWARE.

rtWt rni tea maiche Specification of Letters Patent.

Application filed aug st 7, 1919. Serial n 315,312.

o e l who m y c ce n Be it known that I, ARTHUR E Hownnn, a

citizen of the, United States, residing in Brooklyn Borough, in theCounty of Kings,

city and State of New York, have invented, certain new and usefulImprovements in Typewriting Machines, of which the followingisaspecification, I

This invention relates to typewriting machines, and is herein disclosedas applied to an Underwood typewriting. machine. In typewriting'machines having a revoluble plate'mthe writing of labels or similarsmallwork sheets is often a matter of considerable annoyance,"espefcially ifthe machine is intended to be used ordinarily for other work, inasmuchas the adjusting of a small worksheet is diflicult, and any devicesusedfor holding it are likely to be in the way when the machine is used forordinary writing.

According to the present invention, the platen may be provided with aholding-clip which is adapted to lieupon the edge of 'a small worksheet]and hold the work-sheet against the platen. The clip is hereinshown aslying just at or beyond the extreme end ofthe writing line uponawork-sheet passed around the platen. This keeps the clip so far out ofthe way, that it in no way inter feres with the writing on the largestworksheet which can be accommodated in the typewriter carriage. The clipis herein shown as pivoted upon a plate let into the surface of theplaten and supported by a single screw passing through an apronextending from the plate and lying against the end of the platen. Thisplate may form a device for holding in position a spring whichis adaptedto normally 'hold' the clip clear of the platen surhe yp writ St cture-zFigure 2 is asectional side view of the platen a n ont e brok n of Figure Fi ure 3 a f o t ew 'th nd f s platen, mainly in section, to showthe rela tionship ofthe parts, i v '4 7 to ustrate he la io shi f e d rito Figure 4 s a spread perspective of the clip andthe' means formounting it and control ling *l lgure 5 1s a view similar to Figure ilout showing the parts assembled.

showing the mounting of the clip.

Figure 7 is a perspective view of the plate on which the clipis'mounted.lnthe Underwood typewriting machine, a carriage 10 travels upon railswhich in;

,Figure 6 is'a plan view of the platen,

elude a front rail 11, being fed along a step at a time by meansofauniversal bar, (not shown), every time a type bar l2approaches theplaten 13 to cause its type l'to print against the face of the platen,the carriage,

for this purpose, being constantly under the tension ofa spring-barrel,(not shown). As the carriage travelsalong, 1ts pointer 15 1ndicates uponthe scale 16, theletter-space at whichthe type la will print. In orderto limit the travel of the carriage, there are provided margin-stopsincluding a right hand margin-stop 1 7, whichis provided with a pointer18 to indicate upon the scale-plate 16, the letter-space at which thecarriage stands. The margin-stop 17 arrests the carriage when returnedtothe beginning of a new line, because the usual lug 19. upon the carriagestrikes the usual lug, (notsho vn), upon the margin-stopili' The usualconstruction is suchthat the margin stop 17 cannot beset to the rightbeyond the zero position, so that the zero point marks the final fixedlimit of travel of the carriage 10 andplaten l3. 'VVhen themargin-Step1? is setat the zero position of the scale,the care riageisarrestedat return in such a posi tion that the type 14 will print justto the right of the edge of a thinextension or lip I QQ'of a clip 21which is mounted upon the Patented May 16,1922.

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letter'spaces to the left of the position occupied by the lip 20, andaccording to the present invention this space may be occupied by theclip 21 and its mounting which lies beneath it. Normally, the end of theclip 21 having the spring 22, (Figure 3) which underlies it and isseated in a bore 23 in the wooden body 24: of the platen. The clip issupported by a plate 25 which overlies the fiat bed 26, cut into thewooden body 2a and which has dependent ears 27 extending into wells 28out below the bed 26 and at the margin thereof.

The plate 25 is provided with an opening 29 through which the spring 22passes and which serves to hold the spring in position. The clipstraddles the plate 25 and its ears 27, and is provided with dependentears 30 which are adapted to fit rather closely upon the outside of theears 27 and to be pivotally attached thereto by means of pintlesor'r'ods 31. The spring 22 normally swings the lip 20 upwardly and rocksthe opposite end 32 of the clip 21 downwardly.

In order to enable the lip' 20 to overlie. and grip the edge of a smallwork-sheet 33, such as a label, the clip is adapted to be rocked on itspintles 31 against the tension of the spring 22. For this purpose, thereis rovided a cam-plate 3a journaled upon the axle 35 of the hub 36 ofthe platen, comprising a cam elevation 37 which, when rocked from theFigure 1 position to cam upwardly the end 32 will cause the lip 20 toswing down to seize the worksheet 33 against the rubber surface of theplaten. In addition to'the elevation 37, there is a depression 38 uponthe plate 3% which may be brought opposite the end 32 and which is tooshort to strike the end 32, with the result that the lip 20 thenoccupies the Figures 1 and 5 position, being raised thereto by thespring 22. To enable the cam-plate 3 1 to be easily rocked to bringeither the elevation 37 or i the depression 38 to the end 32, it isprovided with a pair of knurled finger-pieces 39 formed as turned-overends of the plate 34: and extending away from the face of the platen.These turned-over ends project slightly from the cam-plate 34:, and,since the end 32 lies between them, said end limits the rotation of theplate 34: to the space between the two finger-pieces 39. To enable v thecam 37, 38, to be short, the end 32 may be in the form of a tongue orreduced extension of the clip. In order to hold the plate or mounting 25firmly in position, the plate 25 is provided with an extension or apron40 adapted to overlie the end of the platen and to be held in positionby a screw 41 having a shoulder 42 adapted to bear against the apron 40around the margins of the opening 13 through which the screw passes andis threaded into the usual dished extension of the platen hub 36. Thescrew lip 20 is pressed outwardly by a der 12 isadvantageously just thethickness of the cam-plate 34:.

It will be observed that the clip 21 may be practically a continuationof the rubber surface 15 of the platen, and, in order to make thefitting of the clip 21 simple, the

edges of the rubber surface 45 may be cut radially, as shown in Figure2, and the clip may have its side surfaces 16 cut to substantially fitthe radially cut rubber surface. The thickness of the clip 21 and thedistance by which it lies beyond the circumference of the platen areherein shown as considerably magnified in order to facilitate theillustration of the structure. For the same reason, the height of theelevation is considerably exaggerated. It will be observed that thelabel or work-sheet 33 is grasped only by its extreme left-hand marginand that it can be written on except for a distance equal to about aletter-space at said margin Where the lip 20 overlies it. The clip whichholds the label will not interfere with the feed-rolls or other rolls,nor will it prevent a worksheet from lying substantially flat around theplaten and so will not handicap the typist in using the machine for anyordinary work.

As hereinbefore noted and as shown in Figure 1, the sheet-holding clip21 is positioned at the left end of the platen 13 beyond the printingfield thereon of the type 14,-, as this field is determined by the finallimit of travel of the platen 13 toward the right permitted by themargin-stop 17 at its extreme right or zero position. It is thereforeimpossible, under any circumstances, for the type 14 to strike thesheet-gripping lip 20 of the clip 21.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a traveling carriageand a revoluble platen therein, of a clip extending from one end of theplaten toward the middle thereof, a pivot within the platen about whichthe clip swings to and from the platen surface, an axle for the platen,and a cam journalled on the axle and lying against the end of the platenadapted to be rotated to. control the clip.

2. In a typewriting machine, the combination with a traveling carriageand a revoluble platen therein, of a clip comprising a thin extensionoverlying part of the circumference of the platen, means for supportingsaid clip so that it lies almost flush with the surface of the platen,just at the limit of printing upon the platen, an axle for the platen,and a cam journalled on the axle adapted to be rotated to effectmovement of the clip against the surface of the platen to hold aworksheet upon the platen.

The combination with a round platen, of a clip adapted to overlie partof its surface, ears upon said clip, a plate adapted to lie in adepression of the platen, ears upon the plate, means for pivoting theclip upon the plate by the two sets of'ears, and a fin ger-piece forswinging the clip against the platen by rotating 1t upon its ears.

4. The combination with a round platen, of a clip adapted to overliepart of its surface, ears upon said clip, a plate adapted to lie in adepression of the platen, ears upon the plate, means for pivoting theclip upon the plate by the two sets of ears, an axle for the platen, anda plate journalled upon the axle comprising a cam to engage the clip toswing it against the platen.

5. The combination with a round platen,

I of a clip adapted to overlie part of its surface, ears upon said clip,a plate adapted to lie in a depression of the platen, ears upon theplate, means for pivoting the clip upon the plate by the two sets otears, an apron "fast to said plate and overlapping the end of theplaten, a screw threaded into the platen through said apron to hold theplate in position, an axle for the platen, and a cam plate journalledupon the axle and held in position by the screw and adapted to berotated to bring the clip down upon the platen.

6. The combination with a round platen, of a clip adapted to overliepart of its surface, ears upon said clip, a plate adapted to lie in adepression of the platen, ears upon the plate, means for pivoting theclip upon the plate by the two sets of ears, a spring held in positionby the plate and normally V holding the clip clear of the platen, anextension of said plate lying upon the end of the platen, a'screwthreaded into the platen through said extension, a cam plate slidingupon a shoulder of the screw and adapted to swing the clip against thepressure of the spring, and an axle for the platen guiding the camplate.

7. The combination with a round platen and a shaft upon which saidplaten rotates, of a clip adapted to overlie part of the surface of theplaten, means within said platen 8. The combination with a round platen.

and a shaft upon which said platen rotates, ot' a clip adapted tooverlie part of the-surface of the platen, means within said platen forpivoting the clip about an axis transverse to the longitudinal axis ofthe platen, said clip having a tongue projecting over the end of saidplaten, a cam member mounted for rotation upon said shaft and providedwith a slot, and a screw projecting into the end of said platen throughsaid slot, and having a shoulder co-operating with said slot, thexcambeing adapted to engage said tongue for rocking said clip to hold orrelease a work-sheet on the platen.

9. The combination with a round platen,

of a clip adapted to overlie part of its surface, means for mountingsaid clip below the surface of said platen for pivotal movement about anaxis transverse to the longitudinal axis of the platen, means foroscillating one end of said clip to raise or lower the other end, andmeans opposing the downward movement of said other end of said clipARTHUR E.-HOWELI. Witnesses:

CATHERINE A. NEWELL, MARGARET Gr. NOONAN.

